Electric plug



Sept. 24, 1935. J. WALKER 2,015,504-

ELECTRIC PLUG Filed April 19, 1932 INVENTOR.

Jose /2 Walker ATTORNEY.

Patented Sept. 24, 1935 UNITED STATES PATENT OFFICE ELECTRIC PLUG Joseph Walker, Topeka, Kans'. Application April 19, 1932, Serial No. 606,114

1 Claim. (Cl. 1'73332) cooking utensils, laundry irons, or the like.

A further object of my invention is to provide an auxiliary plug removably arranged to avoid withdrawal of the principal plug.

A still further object of my invention is to provide link connections in the principal plug to contact with the prongs of the auxiliary plug to make and break the circuit.

A still further object of my invention is to provide a plug separably arranged, one plug as an auxiliary constituting a plug system between the electric feeders and the element heated.

These and other objects will hereinafter be more fully explained, reference being had to the accompanying drawing forming a part of this specification, and in which like characters will apply to like parts in the different views, and in which:-

Fig. 1 is a side View with the casing half removed.

Fig. 2 is a transverse view of the plug assembly.

Fig. 3 is an upper end view of Fig. 2, the auxiliary plug removed.

Fig. 4 is a similar View to Fig. 3 withthe auxiliary plug attached.

Fig. 5 is a transverse view of the link and contact element shown in Fig. 1.

Fig. 6 is a modification with parts removed for convenience of illustration.

My invention herein disclosed consists of an auxiliary plug comprising a base portion l and a flaring grip 2 to receive an electric cord 3 axially extending therethru connecting with the prongs 4 in the usual manner but not shown in the drawing. The said prongs are insertable thru apertures 5 arranged in the outer end of the casing halves 6 of the principal plug as shown in Figs. 1, 2, and 4.

The principal plug is of the usual type having a pair of contact members 1, but such I do not claim broadly, but employ the same for my improvement consisting of link contact members 8, each of which is removably attached to the inner ends of contact members 1 respectively, the outer ends of the said links have a bend outward from each other as at A to receive the said prongs 4 of the auxiliary plug snugly engaging therebetween to close the electric circuit, and being so arranged will obviate the removal of the said principal plug which is subjected to a greater degree of heat, the result of which deteriorates the contact elements such as commonly used, and to avoid destruction, it is preferred to insert the same without further disturbance. I then make and break the circuit by inserting the auxiliary plug that carries the current lines, the said plug being easily removed and applied.

It will be understood that the link contact elements 8 are attached at the same points and in the same manner provided for the wire attachment under the old system and in Fig. 6 is shown a modification wherein one link extends outward to project into the auxiliary plug contacting with an element 9 as contacting means for the other side of the circuit, by which means danger of closing the circuit prior to the removal of the plug at the other end of the cord is eliminated, and such other modifications may be employed as lie within the scope of the appended claim.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:-

In an electric plug, in combination with a principal plug for laundry irons or the like, the plug comprising a casing and a pair of electric contact members secured therein; of a link and means to secure one end thereof to one of the contact members, the free end of the said link extending outward from the casing, and another link and means to secure one end thereof to the other contact member, the free end of the last said link being concealed within the casing, the said links converging toward the free ends thereof; of an auxiliary plug comprising a base and grip portion connected and having a pair of prongs, one end of each prong secured in the base, one prong outwardly extending from the base, the other prong concealed within the base and each prong being connected with an electric circuit, and being so arranged, the projecting prong and said projecting links will contact with their respective concealed prong and said concealed link when the auxiliary and principal plugs are connected thereby.

JOSEPH WALKER. 

